Table of Contents Introduction................................4 Warning ................................4 Performance Characteristics ........................4 Installation ................................5 Unpacking ..............................5 Visible Loss or Damage..........................5 Concealed Loss or Damage ........................5 Packing List ..............................6 Selecting a Location ............................6 Leveling Unit ..............................6 Installing and Leveling Casters ........................7 Fluorescent Lamps ............................7 Door Removal ..............................7 Shelves ................................8 Electrical Connection ............................9...
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ABLE OF ONTENTS Pen Arm Calibration............................24 Temperature Recorder Calibration Check ....................25 Chart Rotation Speed ..........................25 Battery Back-up ............................26 Battery Location and Replacement ......................26 Optional Alarm/Control Relay ........................26 Connection to the Relay ..........................26 Setting the Alarms ............................27 Chart Range Selection..........................28 Recorder Specifications..........................29 Maintenance..............................30 Cabinet Cleaning ............................30 Cleaning the Condensor ..........................30...
Introduction This manual is intended to provide installation and operat- ing instructions for Isotemp Plus Alarm version refrigera- Warning tors. The alarm version control system provides both Warnings alert you to a possibility of audible and visual indication of alarm conditions in an personal injury.
Installation Unpacking Save all packing material if apparatus is received dam- aged. This merchandise was carefully packed and thor- oughly inspected before leaving our factory. Responsibility for its safe delivery was assumed by the carrier upon acceptance of the shipment; there- fore, claims for loss or damage sustained in transit must be made upon the carrier by the recipient as fol- lows:...
NPACKING AND NSTALLATION Packing List The following items are packed in the envelope located inside the refrigerator chamber. If any of the following items are not present, report the missing item to your local Fisher representative. • Instruction Manual • Door Lock Key •...
NPACKING AND NSTALLATION Installing and Leveling Casters Caution Isotemp Plus refrigerators and freezers come with four If the unit was tilted in excess of 30 casters, which thread into the base of the unit, one in degrees, level it and do not apply each corner.
NPACKING AND NSTALLATION Shelves Shipped inside each cabinet are shelves packed in plastic Note and a bag of shelf supports. Chromatography units include addi- tional 1/2 shelves, which can be Shelf spacing is adjustable to suit user requirements. used in place of the full shelves. Insert four shelf supports for each shelf into the pilasters as shown.
NPACKING AND NSTALLATION Electrical Connection Warning The frequency and nominal voltage requirements for the Insufficient line voltage is often the unit are specified on the data plate, which is located on cause of compressor start-up failure. the interiors upper left side. Only plug the unit into a It is strongly recommended that a power source that meets these requirements.
Controls Panel Controls Before operation, it is necessary to become familiar with the refrigerator controls. All the refrigerator controls are located on the header panel. A layout of the controller and LED’s are given below. Alarm LED'S Temperature Display POWER Interior Light Switch Menu Keypad...
ONTROLS position. While in the Alarm Enable position, the menu items can be viewed but not changed. The key can then be pulled to secure the values entered. Note The key can be pulled in the Off or the Alarm Enable position. Temperature Display The temperature display indicates chamber temperature while in the control mode of operation and menu titles and...
ONTROLS Keypads Menu Keypad – Pressing the Menu keypad enters the controller into the menu selection mode, designated by the illumination of the MODE LED. Repeatedly pressing the Menu keypad cycles through the list of menu items (see Menus). After the final menu, the controller returns to the control mode and the MODE LED turns off.
Operation The refrigerator is started by inserting the power switch key, which is found in the envelope inside the unit, into the key switch. Turn the key to the middle (set up) posi- Note tion. The internal fans will start and the display will flash The Pout display is a normal occur- between Pout and the current chamber temperature.
ONTROLS Units • Units select (C,F) – Selects the desired temper- ature display units in °C or °F. Use the Up Arrow keypad to change the units from C to F. Use the Down Arrow keypad to switch from F to C.
ONTROLS Alarm Test Menu • Alarm Test (At) –Use the Up Arrow keypad to change the n to H. By subsequently pressing the Menu Keypad the controller will perform a High Alarm Test (see Alarm Test in Alarms sec- tion). Use the Down Arrow Keypad to change the display to L.
ONTROLS Control Mode The Control Mode of operation is indicated when the Mode LED is OFF. With the desired temperature set point and alarm values entered, the refrigerator will then begin to control to the set temperature. There is a time delay between compressor activations.
ONTROLS Alarms Alarm Version Refrigerators are equipped with audible and visual alarms. They also feature remote alarm con- tacts. The key switch must be in the Alarm Enable posi- tion for the audible alarm and remote alarm contacts to activate. Alarm messages are shown on both the temperature display and in the row of Alarm LED’s located above the temperature display.
ONTROLS refrigerator temperature and “door”. If a door is opened for 3 minutes, the audible alarm will sound and the remote alarm contacts change state. Power Loss Alarm When AC power is lost, the display will alternately flash between the current refrigerator temperature and “Pout”, the Power Out LED will light, the audible alarm will sound and the remote contacts will change state.
ONTROLS test, simply press the Down Arrow Keypad when the dis- play shows n. The display will then show L. Press the Menu Keypad again in order to activate the low alarm test. Remote Alarm Contacts In addition to the audible and visual alarms, there are two sets of remote contacts on the side of the header panel, which change state during an alarm.
ONTROLS All contacts are capable of switching up to 24 volts AC/DC @ 2 amps. The common (C) and normally closed (NC) contacts open during an alarm. The common (C) and normally open (NO) contacts close during and alarm. The contacts for the Deluxe Remote Alarm are normally closed and open during and alarm.
ONTROLS Offset In the event the refrigerator needs to be calibrated, a sim- ple routine is available to adjust the display and control point to a referenced standard. To set a temperature off- Caution set while in the Control Mode (mode LED off), simply INCREASING the offset value press and hold the Menu key for 5 seconds.
Chart Recorder Operation and Maintenance The recorder is installed to provide air temperature read- ings inside the unit. The recorder will swing up and down Caution with the unit’s air temperature. The customer is responsi- It is important that these instructions ble for evaluating the normal swings of the unit for suit- be read before operating the instru- ability for samples stored in the unit.
HART ECORDER PERATION AND AINTENANCE Marking Systems: Mark-A-Matic II Inking System This type of pen consists of a self-contained ink reservoir with a porous plastic stylus, which is snapped around the outer edge of the metal pen arm. A pen cap is provided to extend the life of the ink pen dur- ing shipping or when the recording unit is not in service.
HART ECORDER PERATION AND AINTENANCE Figure 5: Pen Arm Assembly Pen Arm Calibration When the unit is first powered on, the pen arm(s) will move off of the chart and then move back onto the chart briefly stopping at the outer most temperature graduation ring of the chart paper.
HART ECORDER PERATION AND AINTENANCE Temperature Recorder Calibration Check This recorder has been accurately calibrated at the facto- ry. Before making any adjustments, this instrument should be in service for 24 hours. Thereafter, if any adjustment is required, perform the following procedure: Figure 6: Push Buttons Place a Certified Test Thermometer(s) in a solu- tion bottle(s) alongside the recorder’s sensor...
HART ECORDER PERATION AND AINTENANCE The LED will flash the appropriate number of times to show the chart rotation speed that is selected. To perma- nently save the chart rotation speed that has been select- ed, press and release the “chart change” button (#3) and the recorder will resume normal operation.
HART ECORDER PERATION AND AINTENANCE The relays that are used in this recording unit are latching type relays. That is the contacts of the relay will remain either closed or open (even when there is no power applied to the recorder) until the relay is pulsed with a sig- nal from the recorder to change the position of the con- tacts.
HART ECORDER PERATION AND AINTENANCE Chart Range Selection If the recorder has a range sticker (that lists several tem- perature ranges) mounted on the front of the chart plate, under the chart, then the following section will apply to you. This recording unit has the option for the user to select from several temperature ranges that are programmed into the recorder.
Maintenance Cabinet Cleaning Caution The cabinet interior should be cleaned frequently. Any When servicing the unit, disconnect spilled liquid should be wiped off immediately. Stains plug from the electrical power source resulting from some spills can be permanent if not quickly removed.
Troubleshooting This table is intended to assist in resolving user-correctable Refrigerator problems by relating symptoms to their likely causes. If service beyond the scope of this table is required, contact Fisher Scientific Service Division at 1-800-438-4851. Symptom Probable Cause Action...
Replacement Parts Replacements for Laboratory Refrigerator parts serviceable by the user may be ordered, by part number, from Fisher Scientific Co. at 1 800-438-4851. Solid State Relay (K2) SPN88616 Magnetic Relay (K1) SPST SPN102259 Magnetic Relay (K1) DPDT SPN102260 Alarm Version Temperature Controller...
Warranty Laboratory instruments and equipment manufactured by Fisher Scientific Company L.L.C. – Laboratory Equipment Division (hereinafter called “the Company”) are warranted only as stated below. Subject to the exceptions and upon the conditions specified below, the Company agrees, at its election, to...